Improvement in machine for boring posts and pointing rails



ymdgaat para arpa RUDOLPH MARTIN AND MATTHEW HARNER, or TANEYTOWN,` .MARY-` 1 i LANDy Lettersl Patent No. 104,47 6, dated .Tune 21, 1870.

IMPRovnMnNT im MAcHINE I 'oR BORING- PoSTS AND POINTING RAILS, i V l n j The seeauie referred to manege neuem patent and making part of the same.

To allirhom 'it may concern Be it known that we, RUDOLPH MARTIN and MAT- THEW HARNER, of Taneytown, in the county of Carroll and State of Maryland, have inventeda new and improved Machine for Boring losts and Pointing Rails; and we do`lhe1eby declare that the following is "a full, clear, and exact Ydescription'of the same, reference `being had `to the accompanying drawing making apart of this specification, in which- Figure 1 is a side elevation, and Figure 2 is a plan vicw Thisinvention has for its object to bore fence-posts, in order to.A the making of,` mortises therein, and to sharpen fence-rails, in order to the insertion-of their V"pointed.endsinfsuch mortises. f

`{I heginveution consists inthe combination of a laterally-sliding guide-frame, andthe roller and connecting-rods by which itis moved, )vith aV longitudinallyi sliding beam, provided with' clamps, for holding the post. l 1

It also consistsin an arrangement for regulating the height of the clamping device, in which the l.posts arelaid, `for the purpose of presenting the. middle of the Ipost to the pointof the auger. l In theizdrawingl u f A A are'two main timbers, projecting'laterally from the foundation-frame B.` y y Upon the timbers is-a cross-frame, parallel with the ibu`n dation,whic11` frame 1l sustains the stationany augera, witliits geariug,the circular saw b,"and"the platform c, in which the saw works.

The -timbers A alsosustain, on the lower sidesv of those parts projecting beyond the foundation, footpiecesll d, each pivoted `at one end to its timber A,l and supported at its other end by hooks e e,whicl1 catch over teeth, It h,'that project in series from the' ends of the timbers A.

Posts M, pivoted at their lower vends in thefoot- 'pieces d,`pass upward through vertical mortises inthe timbers A, and sustain upon' their upper ends sills Ick, i parallel ,with the timbers, and. occupying, when the foot-pieces cl are suiciently lowered, recesses cut'in `thenppersides of the timbers A, for rthe purpose of Vreceiving them. j j 1 f O is a guideframe,resting 011 the sills fi, and arranged to slide `upon them. y

`Dis abeam,'sliding in grooves lengthwise of the guide-way O by the' operation of a pinion vinthe latter gearing with a rack in the under side ofthe former;

` and l i Hare holders, fastened to y the upper side ofthe beam D, and provided'with set-screws m m, for clamping the posts which the holders receive y Pins a n are set into' the upper part of the beam' D, in pairs at regular intervals, each pair indicating where ahole should be bored in the post.

E is a roller, mountedfin bearings at the side Aof the cross-frame, and connected by rods o o, jointed to knobs set in the roller, vwith staples in the under side of the guide-frame G.

' The Vroller is furnished with a projecting lever, r, by which it may be rotated, so as to draw alongthe sills k the guide-frame G, bearing the post clamped in the l holders upon the point of the auger a.

After one hole has been bored in the post, the guide-l frame is run back by the rotation of the roller in the contrary-direction, the beam!) slid along in the guide- :frame until the next pair of pins n comes opposite the auger, Iwhen another hole is bored iu a similar man ner.

lhe position of the guide-way'aud sliding beam with reference to. the timbers A may be regulated by -rasiug or lowering the foot-pieces d, so as to always 'place the middle line of the post opposite the point of y the auger.

1F is a Yseparate truss-frame, connected with whose upper rcross-beam s, `by staples, is a platform, t, which slides lengthwise ofthe cross-beam, and bears a holder, I, furnished with a setl'screw, /mwhich holder is pivotel to the platform, so as to'swin g entirely around,l

The tifuss-frame F is placed at aconvenient distance an angle by the saw.l This done, the platform tis slid lalong the'cross-bea-m until the other side of the rail canbe sawn across at a eorrespondingangle. One end of the rail is then pointed. To point the other end, swing the rail halfway around in the holder l, loosen. the set-screw mf, slide the rail along to the saw,

clamp it, and renew'the operation.

Havingthus described our invention, y What we claim as new, and desire to secure by Letters Patent, isi 1. The combinati-ou of the laterally-sliding guideframe .0, roller E, and connecting-rods o, with the 1ongitudinally-sliding beam D, provided with holders l, as set forth.

' 2. The combination of the amber A, adjustable footfpiecedpost sill k, and guide-frame O, inthe manner and for the purpose set forth. y

o the above specification of our invention, we havesurged our hands, this 1st dayof-March, 1870.

RUDOLPH MARTIN.

MATTHEW HARNER.

Witnesses:

OHAs. A.VPET'TITT, SoLoN C. Kenton.V 

